1. What is a Solar Rooftop System?2018-04-11T11:56:21+05:30

As the name suggests, a solar rooftop system is where the solar panels are installed on the roof of any Residential, Commercial, Institutional or Industrial building.

This can be of two types:

  • Grid Connected Rooftop Solar System with storage facility
  • Grid Connected Rooftop Solar System without storage facility
2. What is a Solar Rooftop System with Storage facility?2018-04-11T11:59:16+05:30

Some Solar rooftop systems that have a battery as storage facility. Such solar systems can ‘’store’’ electricity in the battery and hence are named so.

3. What is a Grid Connected Solar Rooftop System?2018-04-11T11:59:50+05:30

n grid connected rooftop or small Solar Photo Voltaic (SPV) system, the DC power generated from SPV panel is converted to AC power using power conditioning unit (eg. Inverter) and is fed to the grid either of 440/220 Volt three/single phase line or 33 kV/11kV three phase lines depending on the capacity of the system installed at Residential, Commercial, Institutional or Industrial building and the regulatory framework specified by respective authorities. These systems generate power during the day time which is utilized fully by powering captive loads and feed excess power to the grid as long as grid is available. In case, where solar power is not sufficient due to cloud cover etc., the captive loads are served by drawing power from the grid.

4. Where can such plants be installed?2018-04-11T12:00:16+05:30

As per the policy, such rooftop systems can be installed at rooftops or/and Open areas on the land, building or infrastructure or part or combination thereof.

5. What is GUJARAT SOLAR POWER POLICY 2015?2018-04-11T12:00:52+05:30

Government of Gujarat has announced Gujarat Solar Power Policy on 13-Aug-2015 to facilitate and promote solar power generation.  To download the policy, click here: http://guj-epd.gov.in/pdf/gujarat_solar_power_policy_2015_n.pdf

6. What is operating period of Gujarat Solar power policy – 2015?2018-04-11T12:01:28+05:30

13-Aug-2015 to 31-Mar-2020

7. What is the size of grid connected rooftop solar system?2018-04-11T12:01:48+05:30

The rooftop solar systems from minimum 1 kWp up to 1000 kWp or in combination can be set up on the roofs as per GoG-Solar Power Policy -2015.

8. Who all are eligible for this policy?2018-04-11T12:02:23+05:30

Eligible Consumer” means a consumer of electricity in the area of supply of the distribution licensee, who intends to use a Rooftop Solar PV System, given that such system is self owned, to offset part or all of the consumer’s own electrical requirements.

9. What are the different categories covered in this policy?2018-04-11T12:19:37+05:30
  • Rooftop PV (Photo Voltaic) System with net metering
    • Residential Or Government Consumers
    • Industrial, Commercial and other consumers
  • Solar Project for captive consumption
  • Solar Project with sale of power to DISOMs
  • Solar Project Under REC mechanism with sale of power to discom at APPC (Avg. Power Purchase cost)
  • Solar Project with sale of power under
  • Solar Project with sale of power to third party under open
  • Agriculture Solar Pump
  • Standalone PV system and home lighting system
  • Canal top and canal bank solar PV project
  • Technology Demonstration
  • Other
10. What safety to be ensured /precaution to be adopted by the customer who install grid connected SPG.2018-04-11T14:01:52+05:30

It is extremely important that the user organization follows strict safety practices as per the guidelines mentioned in the policy. Failure to do so may result in severe damage to life as property. One key safety practice that has to be followed is in case the grid fails, the solar power has to be stopped immediately feeding to the grid so as to safe-guard any technician while working on the grid for maintenance etc. This feature is termed as ‘Islanding Protection’.

More safety directions are available here: http://www.cea.nic.in/reports/regulation/distributed_gen.pdf

11. Can rooftop solar PV replace diesel entirely?2018-04-11T12:18:15+05:30

Whether solar power can replace your diesel consumption entirely depends on a number of factors such as the nature and timing of the load, the extent of load shedding, the area of roof available, etc. Some of the factors that constrain the supply of rooftop solar power include

  • Solar power is generated only during the daytime on non-rainy days
  • Solar power may not handle the heavy starting currents required by heavy machinery
  • The output of the solar plant varies as the sun moves across the sky, and as clouds move across the sun
  • Limited roof area constrains the capacity of solar PV plant that can be installed

Due to these reasons many energy consumers find that rooftop solar power may not support their entire load all the time. Solar power ideally acts in conjunction with diesel generators, taking up part of the load and saving, but not eliminating, the diesel expenditure.

12. How much roof area do I require to install a rooftop solar PV system?2018-04-11T12:18:17+05:30

The area required by a rooftop PV plant depends on the extent of shade-free space available and solar panel efficiency. A solar PV system typically requires 100-130 SF (about 12 m2) of shade free roof area per kW of capacity at current crystalline panel efficiency levels.

13. How much electricity does a rooftop solar PV system generate?2018-04-11T12:18:19+05:30

The amount of electricity generated by a rooftop solar PV plant depends on the location, orientation of the roof, panel efficiency, and ambient temperature. As a rule of thumb, a 1 kWp plant will generate about 4 kWh (units) of electricity a day on average in a year.

14. What are the various components of a rooftop solar system?2018-04-11T12:17:12+05:30

A rooftop solar PV system primarily comprises of Solar PV Modules (panels), Inverters, and Mounting Structures. If battery backup is required Batteries and Charge Controllers would also be integrated with the system.

15. What are the Warranties and Certifications I should look for in my rooftop PV system?2018-04-11T12:16:47+05:30


Solar panels typically have 5-year manufacturer’s warranty with additional performance warranty of 90% of rated power output for first 10 years, and 80% of rated power output for the next 15 years. Other system components (inverters, mounting structures, batteries, junction boxes, etc.) typically have 1-year manufacturer’s warranty extendable to 5 years.


Each component of the plant should conform to various IEC (international) or IS (Indian) standards.
Panels should conform to IEC 61215/IS 14286 for design qualification and type approval, IEC 61730 for safety, and IEC 61701/IS 61701 for salt mist corrosion (for use in coastal areas).

16. What is the capacity of the solar power system I require for my facility?2018-04-11T12:16:27+05:30

The capacity of the rooftop solar plant you require to power your facility should be calculated keeping in mind your requirements, your constraints, and the amount of sunlight available. Rooftop space is the most likely constraint that will limit the size of your solar plant. If the size of the plant is not sufficient to power your entire facility, you can choose between powering light loads, powering critical loads, and using a solar-diesel hybrid.

17. Does rooftop solar PV generate power during a power failure?2018-04-11T12:15:48+05:30

Not all rooftop solar plants generate power during a power failure; only some do. The difference lies in the inverter and the functionality it supports. Grid-interactive and hybrid inverters supply electricity even during a power failure while grid-tied and off-grid inverters don’t.

18. Do I have to build my own plant or can I just buy solar power?2018-04-11T12:15:25+05:30

There are 3 alternatives to building your own rooftop solar plant
a) 3rd Party Sale – Where a solar IPP sells power to the energy consumer using grid infrastructure to deliver the power. Many charges are applicable in addition to the cost of power
b) Group Captive – Where a group of energy consumers or a plant developer and consumers jointly own a power plant. Charges are similar to 3rd Party Sale except cross-subsidy charges are not applicable
c) BOO(T) – Under the Build Own Operate (Transfer) model the solar system provider bears the investment of installing the plant on the consumer’s rooftop, and the consumer only pays for power generated by the plant. This model has the least charges over the cost of power
What are the various policies and regulations (subsidies, incentives, permissions) that I should

19. consider for my rooftop solar systems?2018-04-11T12:15:10+05:30

There are various solar policies that incentivise rooftop solar in India. Central government schemes include 80% accelerated depreciation, capital subsidy of 30% and more based on location, and Renewable Energy Certificates (RECs). Some states have further incentives under their own solar policies.

Permissions primarily deal with ensuring the grid isn’t congested by receiving approval from local power distribution authorities.

Documents needed for Registration at GEDA:


GEDA Registration RTSPV registration From Duly filled & Signed


Recent Electricity Bill


Photo Identity
1. Adhar Card 2. PAN Card
3. Driving License 4. Election Card


Legal Ownership Possession Proof (Copy Of House Tax Bill or Index-2)


NOC of Society in Case of flats or Multi Stored Apartments.